But, there is no evidence of that. Every reference to valley leak issues involves vehicles that are many years old, rendering this entire thread on the LC message board rather irrelevant at this point.

To believe that Toyota/Lexus has been aware of this issue for many years and has chosen to ignore it right up until today is premature, based on no evidence and makes little sense, imo.

 

I'm sorry. But it does not appear that we are reading the same thread.
But I respect your right to disagree.

 

RedHot --- I do agree with you that: None of us knows what the future holds, only Toyota. And until it happens to us, it's a moot point. Amen.

 

well..

 

vrra: This is definitely a circuitous argument.

Rational evidence is of little concern to LC owners because most of us can afford it.

Lexus has apparently determined that it is cheaper for them to defer this cost to their customer than to recall all these engines and/or redesign a proper fix. ‘The Relentless Persuit of Perfection’ is no longer relevant in this day and time. Now, it’s all about the Benjamins. The attitude is no longer to ‘Be The Best That You Can Be’ but rather just to be better than your competitors.

 

it's also a nonsensical argument. we dont know:
the total number of engines subject to the problem
relative to
the total number of engines with the problem.
so before we convict toyota of greed, or conclude this is a defect, beyond normal
wear and tear of the stresses and strains of a high performance v8, we need the numbers,
and without them we dont know what we're talking about.
imho, the number of vehicles with this problem determines the manufacturer's response,
and with no response, we might infer that this really is not much of a problem ...

 

Rational evidence, huh.

I have better things to do with my life, but I’ll play one more round.

Everything cited in this thread involves vehicles built years ago.

Please cite any evidence that Toyota/Lexus has not resolved this issue in recent years and, more specifically, in the LC.

Thanks in advance.

 

It's been interesting... I've said all that I am gonna say. I sincerely appreciate having had the opportunity to exchange views on this subject with my brothers on this LC forum.

 

one thing i wonder about is whether those rc-f's and is-f's and gs-f's that have had this sealant failure were thrashed (endless bouncing off rev limiters, etc) and tracked, etc.

i expect most lc's are driven pretty gently. and with few miles. so i put the chance of this plate failure happening based on the 'rational evidence' i've seen at near zero.

 

My sister drove my IS-F for the majority of it's life, thanks for the victim blaming bro

 

no 'victim blaming' i said i wonder...
but then i don't know how your sister drives.

 

took a re-read through this thread...







perhaps we'd best let this thread rest until the FIRST instance of a valley plate problem on an LC500 as none of knows if it's an issue, or still an issue with the v8 in any recent lexus vehicle.

 

My friends LC500 has to get his valley plate resealed at 30k miles. :/

 

It’s 2023. This engine has been out for 15 years. I think I first test drove this V8 in 2008.
I’d be utterly amazed if Lexus hadn’t spotted this and upgraded engines along the way - you’ve only got to look at the suspension tweaks the LC has had almost yearly to understand how the Japanese operate. They don’t mess about!
I suppose with enough heat cycles and some really hot weather use taking the cooling system to its limits a few times or some track use could maybe *maybe* accelerate a few failures after 100,000 miles but honestly I’ll bet there won’t be an LC that’s suffered this yet anywhere.
Use the coolant and fluids it’s designed for topped up, keep everything clean radiator-wise and it’ll be fine. Trust me!

 

Interesting… I’ve never heard of these valley plate issues before. But upon investigating the interwebs, it does seem like it’s going to be an issue later on. Is it a big issue or a deal breaker? Heck no, but its just something to beware of and it doesnt really catastrophically impact the engine performance/longevity.

According to some of the things I’ve read, its about a 5-8h labor job and potentially 1200-2400 as they disassemble all the stuff on top of the V. (intake, all the wiring, etc).

Coming from my Maserati ownership experience, where the Ferrari engine’s variations will ultimately destroy the block if left unaddressed, and at the tune of $10k+, this little hiccup doesn’t seem like anything.

Hell, the old SC430 requires a water pumping/trimming belt change that’s in the neighbourhood of 1200 bucks at around 100,000 as well. If the cost of this job is only 1200-2400, I’m okay with that and ill just chalk it up to a future maintenance item.